Air and oil feeding pump



Oct. 11, 1932. w. H. D. BRoUsE AIR AND OIL FEEDING PUMP Filed July. 2l, 1928 Inventor M//iam/. Drouse fifa/i254 Q though thelpump is equally adaptable for Patented `ct. 11, 1932 WILLIAMHENRY nivnlvronrnousn', oF rououfrojoulrnmo, CANADA AIR 'AND OIL Application filed July 21,

r:The principal objects vofthe invention are, to provide a pump particularly adaptable for furnishing-a pressure supply of air and oil to an atomizer for .combustion purposes other-high speed pressure requirements.

The principal Vfeature ofthe invention consists in the novel construction and arrangement of parts, whereby the compresser l element arranged `within a closedlpressure sectional viewof the pumptakenthrough the chamber yis adapted to take in arneasured quantity of air and eiland discharge same into the chamber under a common pressure Janda valveoperated by the compresser rotor duct supplies of oil and ing cylinder.

aXis ofthe rotor.

Figure 2 is an elevational view ofthe face i of the-cap .for closing thefend .of the pump casing and which-supports the pumping element.

Figure 3 isa perspective view of thepump rotor. y 1-Y Figure .4 is a perspective 'detail of the oscillating valve.

Figure 5 4is an elevational section -through 39 the yrotor and rotor valves showing the positionof the valve and rotor at the commencementV of-the suction stroke with the oilport ,connected Vwith the rotor cylinder.

`Figure 6 is a view similarto fFigure k5 showa ing the rotor in the mid-stroke position.

Figure l7 is a view similar to .Figures 5 and 6 showing the positionof thepor'ts at the end lof the discharge `stroke with the air intake ing its o pen-sideclosed by'fthe cap 2 which is` securedethereto inapre'ssure tight joint by journal Yorifice l in `which thefshaft 5v ofthe thescrewsr. l K v The cap ,2 is provided-with a horizontalk rotorissupported. a

vA block 7 issecured to theinner face of the cap Zby screws. extendingtherethroughinto the holes-8- in the cap and said block` .is

co-operates with oil and' air passages to con- FEEDING ZPIHVIP 1921s'.V serial Nb. 2%531,

'cylindrical valve chamber 1Q.

municatingfopen'ing ll. 1

' A cover plate 1 2 closes the in-ner sidepf Y thecylinderand valve vcham-bers and .pro-

vided with a journal 'bearing l3` s1 1 pporting i-thehollow inner-end l ofthe rotorfshaft. i'

The shaft y5 has an eccentric portion J15 forming part thereof which lfits within the lcylindrical axial orifice 1 6 in the ,TOJQI' .6 and said eccentric lis formed with a' peripheral slot 17 communicating lwith a passage 18 ,whc'h'extends ,in axial alignment, with` the shaft and as shown in Figure A.l register with [an axial opening inthe journal l3- The slot 17 communicates with a port '19 .arranged in the ,reto-rat ',the'bottom .Side/ad f jacenttolthe' radial vane ,20.

The vane' 2O ofthe rotorextends through n the opening ll into `the slot [2 1 inthe cylin- V fldical Valve ,22. .arranged .in .the Chamber i0 and Causes the valvetoloscillateinsal@hamber as the rotoris carriedV around gin its oscillati-ng/ movement inthe cylinder. Thi-syane is preferblyformed with as tfxpZ, aslllls- `trated in Figures l and?) and .holes Maud 25 extend lengthwise of the vane'in therespectve portions thereof 'leading from .the .bot-tom fend .to a .Point `learnediat-.e.1y adiacenti tothe cylindrcalbodyoftheretor and s aid vholes extend laterally to the side of the vane :opposite .from which the port 1 9 is ldisposed.

raport- 26 inthe cover plat@ l2 communil Cates with theslot in the valve 22 v angl this ,port isconnectedgbyanelbow-pipe 2 7 ,with a ipassage 28 extending through lthe cover plate These chambers ,are connGQQd bY ia com- `l2andgthe.bottom ofthe blockff? and the cap 2 Communicating .with a late-rallyfextendeg .passage V29 ,Shown in; dotted lines in .Figure 2 which connects with ano`il supply'.

The Passage ..28 is Provided .uthja @171530 (leading `into the v alve chamber l0 at the .bottom ofthe 4valve fand, said port'isjadapted 4to `register with a vpassage '31 in `the.` .vlaflve theaXialslot 21`the uppergendof saidlpasinthe cylinjdercliailloGI'-` Y .i

An 1air passage .132 in the cap Shown iin o5 WhQhiS .arranged substantially Iiaiaralcl with" l orgfto an Oil sump 1 1 in the base.vv

. to a lubricating channel 37 arranged V'in the rotor 6 at one endof'the rotary-ec'centric15. v An annular channel 38% surrounds the `shaft T Awithin the vcap 2 to pick Vup lubricating oil dotted lines in Figure 2 communicates with 'a port 33 'which is adapted to register with a passage 34 kin the valve 22, the upper end of which passage is adapted to communicate with the opening 11 between the cylinder chamber'andthe valve chamber' andris cut of by thewallofthe block 7 as the rotor swings the valvein its bearing.

A pipe 35, the lower end of which extends into thelowerportionof the chamber, en-v closed by the pump casing 1 communicates with a port 36 in the cover plate' 12 and leads v that is forced out along theshaft and the oil llowsthroug'fh a duct 39 andis ret-urnedby gravity either to theinteriorjof the casingl Anoil overflow du 3t40 is arranged Y :side wall of the punp casing ljabout midway ofits height and communicates with the oil sumpfll in the basel supporting the pump so y that theoil supply `cannot entirely vfill the interior of the casing 1i A relief valve is arrangedinthe duct la the lower end Vof 'top side which communicates with'an 'oil sup'-Y Inlthe "'peration tif-this the rotation cylindrical portion ,of the "rotor 6 'and moves said rotorfaround the cylinder` wall main-V `y taining aportion of its'sur'facein a semi- 'grolling contact therewith which is sealed by a f Y-When the rotor ,islin'the'position illustrated in Figure 5 and travellingin the direc- Y tion indicated byY arrow thev upward move- ",ment creates-'a suction throughV theoilchanf 'iiel in` the valve and the oil channel inthe fvanecf the rotor, and'oil isdrawn up into thev cylinder'through both 'channels which com- .'municatewith the oil feed. f

'A s' the valve is rocked'in itsibearing the oil 'channel through' the valve is closed Vfrom 7 butoilgisfdrawn intothe axialslot in the" cmmunication withthe oil duct in the block valve; v

i J farund the'cylinder wall swings theairchannel clearof the wall'of` the'valvejchamber at theop-ening flland air is drawn in. r

4,the e'ccer'ltric aft-er it has beencompressedto -afpre'ssure[higher thafnthepressure in' the 'main pump" casing, jan'd the "Oil and air vare zthus .forcedo'ut through the .Central passage ,4 ',The "f continued movement: of the zirotor between the-bottom of the casing Vinterior to 7 the passage 36 and annular passage'37 in the rotor. Thus the oil under pressure within the casing is forced up theV pipe vand Vfed j Vto the eccentric andas the pressure is external to the channel o r passage `37y thefoil will be forced 'betweenthe bearing surfaces of 'jthegeccentric and rotor, thoroughly lubricating same. c The overflow .passage ingof the oil past a predetermined level, con- ',sequently there will .alway'sbe a considerable volume-'of air and oil' to be fed from the casing, This is` regulated by'the'relief valve TheVVV pump is extremely'isimple. fIt'has very few parts and ,these operate-with the simplest kind of motiom and is capable of beingoperated at high speeds to produce-high vpressures which are very'useful in the atomization and burning of oil. v I Y The pump while particularlyfadapted for this service maybe usedfor other' purposes lsuchasffor refrigeration "or it maybe used entirely-as an air.fp.un 1 p,.beingv sealed and lubricated 'with oil,-whi chlof course, under those vcircumstanceswillfbe retained 1 at a .lower level' in the casing 1.. f 'i WhatIclaim-asmy invention is;'- Y 'Y 1.7The7combination' with a pumphaving a cylinder an eccentrically operating rotor in said cylinderand an oscillating valve operated-by themovement vof said rotor, of a casing enclosings'aid pump and adapted to receive'the 'discharge pressure, and means/for .feeding Voil and air-separately through said oscillating valve to said pump cylinder to be `V`*discharged therefrom into' said casing.1V 2. A pump having a cylinder, an eccentric operating inY said cylinder,a rotor -Inounted on saidv eccentric, a valve-operated by Y'the movement ofthe rotor-having separate oil andair 'passages therethrough leading to the interior of said cylinder, oilfand air passages arranged in the pump casingadapted to communicate with thefseparatel oilv and air lpassages in' saidvalve, saidfvalve passages dithrough the rotor, and a casing' enclosing'the 4 kpump andv receiving the discharge from the passageninsaid rotor.

va communicating vvalve chamber, an oscillating separate oiljand Vair"passages therethrough leading 'tothe intake sideio'f said Y cylinder, separatel oil :and air passages in the e lpump casing leading to said passages in said Y, I valve for conducting oiland air'separ'at'ely the chamber of the'fmain"pumpcasingthereto, a'shaft' extending through the pump 40 prevents the ris- Y frecting Voil and 'air into the pumpgcylinde'r,

f A pump h l` vin'ga cylinder chamber and e 'cylinder and having an eccentric, a cylindrical rotor sleeve mounted on said eccentric and engaging the wall of the cylinder and having a radial vane extending into said valve tooscillate the same, a port in the rotor on the-pressure side of said cylinder, a passage through the eccentric adapted to communicate with the port in said rotor, and a casing enclosing said pump and receiving the discharge therefrom.

4. A pump havinga cylinder chamber and a communicating cylindrical valve chamber, a shaft having an eccentric disposed within said cylinder chamber, a longitudinal passage in said shaft opening through one end thereof, a port in the periphery of the eccenconducting passage leading to said port, an

' air passage in said valve communicating with the cylinder and adapted to be closed'by the cylinder wall at a definite period in the oscillation of the valve, an air supply passage in said pump casing communicating with the air passage in the valve, and a casing enclosing said pump casing and adapted to receive the discharge therefrom.

5. A pump casing having a cylinder cham-V ber v and a communicating valve chamber, a shaft extending through said cylinder chamber having an eccentricl thereon, a rotor mounted on said eccentric, a discharge passage extending through said eccentric and shaft, a valve in said valve chamber, said valve having a slot, a radial vane extending from said rotor into the slot in said valve, an oil duct in the pump casing comunicating with the'valve slot in which said vane operates, an oil-passage extending through said vane and communicating with the cylinder chamber, an oil passage extending through the valve communicating with the cylinder chamber and adapted to register on the oscillations of the valve with the duct in the cas# ing, an air passage in the valve communicating with an air passage in the pump casing and leading to the cylinder andl controlled by the cylinder wall, and a casing surrounding said pump casing and enclosing an oil and air chamber therein.

6. A pump, comprising a closed casing, a

shaft journalled in one side of said casing and extending thereinto andhavingan opening leading inwardly from its inner end and ythroughlthe periphery of saideccentric, a blo'clr nhaving ja cylinder chamber therein sechamber "communicating with the cylinder -curedto 'the inner wall of said `casingand 'encircling said eccentric and having ja valve y70 chamber, a rotor mountedv on saidveccentric and engagingthe wall of the cylinder chamber .in sealing.. contact and having a radial vane extending into the valve chamber, `a valve oscillatively Aarranged in the valve v chamberand having'a radial slot into which .said vane extends, a cover plate closingsaid vcylinder and valve chamber, an oilfduct leading to the cylinder kchamber throughVV said, cover plate and extending downwardly to the lower portion 'of said casing, intake passages arranged in said casing `directing air and oil to the pump, and passages in the valve direct? -1 ing oil and air to the cylinder.

7. The combination with a pump having a cylinder, an eccentrically operating rotor in having a vane extending radially therefrom operatively engaging said valve to oscillate the same and separating the inlet side of said cylinder from the discharge side, of a passage in said vane opening directly into the cylinder on the intake side thereof, means for conducting oil to the passage in said vane, and means for conducting air to the intake side of said cylinder separate from said oil.

8. The combination with a pump having a cylinder, an eccentrically operating rotor in saidy cylinder, and an oscillating'valve opsaid cylinder, an oscillating valve, said rotor erated by the movement of said rotor, of a casing enclosing said pump and adapted to receive the discharge pressure, an oilpassage in said valve for conducting oil to said cylinder, an vair passage Vin said valve separated from said oil passage for conducting air to said cylinder, and a single passage in the shaft of said rotor adapted to conduct the oil and air from said cylinder into the in-L terior of saidcasing. I i 9. The combination with a pump having a cylinder, a rotor eccentrically mounted in said cylinder, an oscillatable valve having a diametrically disposed slot therein, and a vaneextending radially from said rotor intol said .valve slot, of an oil passage conducting oil to the slot in said valve at a point intermediate of its length said passage being opened and closed by said vane in its reciprocatingmovement within the slot, saidy vane?l having passages therein connecting said slot with the interior of the cylinder for conducting oil therebetween, andmeans controlled by said valve forV conducting air to the cylinder. l0. A pump having a cylinder, a rotor Yeccentrically operating in said cylinder, a valve movable relative to said rotor 'and operated vby direct connection with the rotor and by its 24 v Y f. -1,eee f,`2r

" ",intakeof oili'and air-'to seidY cylindenil drive Ishafft, an eccentric on seid drivefshaftwith- A o l in the `rotor and byV its rotation` effecting the Y -eccentricioperation.ofsaid.rotorg saideccenf Y gtrio controlling thel discharge of oil' andrair 3 'from `the cylinder, and meansrreceiving the Y discharged oil andair.V Y 1 j A. Y M11; A pmp having Vecylinder,an eccentric operating in said cylinder, a; rotor encire Y A. 0 Cling said eccentric and displaced thereby in (said cylinder, a, ValveV for seperately contro1-` ling the intake oft oil and airfntogs'aid cylin- 4 I der,rmeans forming a slidl'rlgeridoscillatingY operatingfconnection between said rotor 'and 3;, valve' to control the latter said-eccentric. and r rotor. co-operating 'to control the discharge ot oil. and air rom'eaid cylinder. ,v v l i WILLIAMv HENRY DAVENPORT BROUSE.-v y j 

